Problem with laptop power system

By Kijana ยท 5 replies
Aug 20, 2008
  1. Good day everyone,

    A friend of mine brought a laptop (Compaq Evo n610c) to me for check-up, and this is what I found out.

    1. The laptop cannot start without AC power even when the battery is inserted.

    2. The battery is not charging at all.

    3. When you unplug the AC power cord leaving the battery in the laptop, there is some noise coming from somewhere near the battery. The noise is audible when the laptop is shut down.

    I need help to locate the exact problem and ways of solving it.

    Thank you.
  2. Darth_Terra1

    Darth_Terra1 TS Rookie Posts: 212

    sounds like the battery is dead, replace the battery.
  3. Kijana

    Kijana TS Enthusiast Topic Starter Posts: 60

    Cant work, I have tried with several other batteries that are working on other laptops.

    I was thinking that its possible there is a problem in the mobo. The noise is about 2-3cm away from the battery.

    Also when I do the battery power check (by pressing a certain area on the battery), only 1 dot lights up, blinks several times then goes of.
  4. Kijana

    Kijana TS Enthusiast Topic Starter Posts: 60

    Converter Board

    After going through lots of options, I identified the problem to be from the dc-dc converter board.

    So far, I have been unable to get a replacement part and was thinking of trying to repair it.

    I wanted to know if it is possible for the converter board to be repaired or could I be wasting my time and how can I go about it.

    Thank You.
  5. Tedster

    Tedster Techspot old timer..... Posts: 6,002   +15

    depends on how old the laptop is and how much the repair is.
  6. Kijana

    Kijana TS Enthusiast Topic Starter Posts: 60

    Am not quite sure about the age, but the repair cost would be about $20.

    Though I wanted to see if I can do it myself and save the bucks.
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